Seeking information or contact with descendants of David Aird, born 11 Oct 1805, Avoch, Ross-shire, Scotland, son of James Aird and Christian Sutherland. David married Catherine Hossack 8 Oct 1839, Avoch. After their marriage, David and Catherine moved to London. During the 1840's, their address was 40 Wilton St, Westminster. By the 1880's, David was in San Francisco, Ca (unknown if other family members were with him). His address was 8 Lafayette Place, Between Green Union Sts, San Francisco. Last known there in 1887. Any info appreciated.